transfer rate is very low in Bareos 17.2.4

Andrey N

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Jul 22, 2019, 1:35:51 AM7/22/19

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When backing up the network information transfer rate is very low (max 12 MB/s).

Gigabit hardware is used by network.

The parameter "Maximum Network Buffer Size" changed by me - there is no result.

Tell me what the problem is?

Andreas Rogge

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Jul 22, 2019, 4:37:46 AM7/22/19

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Am 22.07.19 um 07:35 schrieb Andrey N:

> When backing up the network information transfer rate is very low (max
> 12 MB/s).

Please check with iperf or some equivalent tool that the network can
actually transfer more than 12 MB/s from the FD to the SD machine.

>
> Gigabit hardware is used by network.

But that doesn't imply you really have a gigabit connection between both
nodes...

>
> The parameter "Maximum Network Buffer Size" changed by me - there is no
> result.

Do *not* change this parameter. It won't help.

>
> Tell me what the problem is?

If it is stuck at 12 MB/s, some network component probably negotiated
100 MBit/s.

Best Regards,
Andreas
--
Andreas Rogge andrea...@bareos.com
Bareos GmbH & Co. KG Phone: +49 221-630693-86
http://www.bareos.com

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Oleg Volkov

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Jul 23, 2019, 4:04:01 AM7/23/19

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The network rate usually for already compressed data. Please consider also read disk IO rate, you may have bottleneck here.

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